‌Operational guidelines on how foreign direct investment activity should be measured, setting the world standard for direct investment statistics. The new international standards in BMD4 were implemented in September 2014.

‌‌Available for 58 countries, the index includes all G20 members, and 22 sectors. It gauges the restrictiveness of a country’s FDI rules by looking at the 4 main types of restrictions on FDI: foreign equity limitations, screening or approval mechanisms, restrictions on the employment of foreigners as key personnel, and operational restrictions.